What do you think the S.W.A.T. team is for? We can bust crack houses, yet they continue to let them operate and bust the users of the drug instead of taking down the house that cooks it.
In the same sense, if we take out the camps that are training terrorists, we can prevent terrorism before it starts. Many of these people are brainwashed at the camps anyway, the kids are shown puppet shows that teach them to hate and fight.
Congress has to declare war before we can do anything serious to them. Right now it is just a police action?